Not a Modern Cinderella: Flash Married To A Hidden Tycoon

From the back cover

Ella Hart was adopted into a wealthy household, but she never lived like a daughter.

While her adoptive mother, Nora, indulged in luxury and high society, Ella was treated like little more than a servant, forced to do the hardest chores and surviving on scraps of affection.

Until the day her biological family finally found her and brought a shocking revelation.

Years ago, the Hart family had arranged a marriage alliance with the Sterling family. The bride was meant to be either Ella... or her beloved sister, Piper.

That day, the impossibly handsome man arrived in worn-out clothes. He was instantly rejected by Piper.

To escape her old life, Ella agreed without hesitation, but she would never have imagined the man in front of her was the richest CEO in the city...